| 1. | In the field of earthquake engineering , structural experiments are still important means for understanding behaviors of structures and their components 在结构工程领域,结构试验是研究结构及构件性能的重要手段。 |
| 2. | Our calculation shows different behaviors of structure formation in positive - and negative - polarized systems and a critical dielectric constant at which a ground state transition happens is reported 我们发现,由于多极矩效应的影响, er流体中正负偶极矩因子的对称性将被打破,并进一步地计算了颗粒负极化时体系基态结构发生转变的临界值。 |
| 3. | The analytical solution indicate that , the disturbance has a important influence on the behavior of structured soft clay , and , with the increasing of disturbance degree , and strain is added , but the dissipation of pore pressure is decelerated 计算分析表明,扰动作用对结构性土的固结性状有显著影响:扰动度越大,变形越大,孔隙水压力消散越缓慢。 |
| 4. | This paper focuses on the analysis of dynamic characteristic and anti - seismic behavior of structure for above situation . the main contents of the paper are describes as follows : a 、 it is important to simulate soil - structure interaction for this paper 针对上述情况,本文开展了整体式桥台无伸缩缝桥梁的动力特性分析和地震反应分析,主要做了以下工作: 1 、本文的首要工作是解决土体结构相互作用的模拟问题。 |
| 5. | The influence of the hysteretic energy dissipation is considered by the equivalent displacement in this method and damage index is used in the process of design . according to the different performance objective , the behavior of structure under the earthquake is controlled effectively . then the deformation capacity of beams and columns is realized by the earthquake resistant constructional measure 针对现有各抗震设计方法存在的问题,通过等效位移考虑地震过程中的滞回耗能影响,同时将损伤指标引入设计过程中,通过用户选用不同的性能目标来实现结构性能控制,从而可以有效的控制结构在地震下的行为,并通过量化的抗震构造措施实现梁、柱的变形能力设计。 |
| 6. | In this test a new method was adopted to check and test the behaviors of structures by using optical fiber bragg grating sensors which realize the synchronous measurements with electricity - resistance gauges . the results show that optical fiber bragg grating sensors has boundless prospects for checking in civil engineering 试验中,还采用电阻应变计和光纤布喇格光栅传感器在加载过程中对加固构件进行同步测量,结果表明光纤布喇格光栅传感器是应用于土木工程检测的很有前途的新技术,有着广泛的应用前景。 |
| 7. | Considering the behaviors of unbonded prestressed concrete beams and steel reinforced concrete columns , a kind of nonconforming beam - column element was constructed and the analysis precision was improved . loading and reloading paths were introduced into the constitutive relationship of concrete . it is helpful to the analysis program to trace the full - range mechanical behavior of structures including the descending part and the hysterisis characteristic under cyclic loading 考虑无粘结预应力混凝土梁、型钢混凝土柱等结构构件的受力特点,构造非协调梁柱单元,提高了分析精度;混凝土的本构关系中,引入卸载路径和再加载路径,使得分析程序可以追踪包括下降段在内的结构全过程力学行为,以及反复荷载下结构的滞回特性。 |
| 8. | In structure design , the value of axial compression ration of src columns has influence not only upon the seismic behavior of structure , but also upon the section dimension , steel requirements and seismic behavior . at present , the definition of the limited values of axial compression ration in the design specification of src structure and other research on a xial compression ration is focus in the full - web type src columns . but there is fewer data about lattice type src members 在结构设计中,钢骨混凝土柱轴压比的取值不仅对结构的抗性能有很大影响,同时也是确定柱子的截面尺寸、钢骨含量及抗震配筋构造等的重要依据,目前,钢骨混凝土结构设计规程中对轴压比限值的规定和其它有关轴压比的研究主要是针对实腹钢骨的,目前尚无空腹式钢骨混凝土方面的资料可供参考。 |
| 9. | To ensure all segments under construction to approach corresponding construction segmental reasonable states in both configuration and mechanics states and good behavior of structure after completion , escaping from all kinds of accidents in whole process of construction with high efficiency , safety , excellent quality of engineering achieved , the grey prediction model ngm ( 1 , 1 ) was proposed to fit prediction of any raw grey series by studying grey causes and whitening results based on the normalized mapping rules ; random perturbation method of genetic algorithms was proposed to raise efficiency of forward rolling optimization ; simultaneous analysis of strength and stability was carried out to ensure safety of strength and stability 摘要为了保证实际施工中结构各节段在构形和受力状态两方面逼近施工节段合理状态,避免事故发生,确保工程高效、安全、优质,基于归一化映射规则,研究灰因和白果,提出了适应任意灰序列的灰预测模型ngm ( 1 , 1 ) ;研究遗传算法的随机摄动法,提高向前滚动优化效率;研究强度、稳定性的同步分析技术,保证施工过程强度、稳定性安全。 |
| 10. | Pseudo - static force testing of 1 : 2 scale models of a steel frame with dog - bone connections is first carried out in china in order to obtain elastic - plastic behavior of dog - bone connections steel frames under cyclic loading as well as to analyze collapse characteristic after structural ultimate strength has lost . the influence of dog - bone connection on the coming order of plastic hinges and failure characteristic of steel frame , and the influence of dog - bone ' s shape and position on the behavior of structure is obtained 通过试验考察了狗骨式连接平面钢框架结构在循环荷载作用下的弹塑性性能;了解狗骨式连接对结构塑性铰出现的顺序以及结构破坏形态的影响;了解节点处与狗骨处应力发展状况,探讨狗骨削弱的形状和削弱位置对节点性能的影响。 |